The computation resuIts show that flowfield ofjet emanated from the nozzle with the type of elliptic contour and conic exit contour is of awell-organized large scale vortex structure.

• 计算结果表明，内流过渡曲面为椭球面而出口形状为锥面的风琴管式喷嘴，喷射出的圆形射流流杨具有良好的大尺度涡环结构。